/*
 * Copyright 2004 - 2013 Wayne Grant
 *           2013 - 2025 Kai Kramer
 *
 * This file is part of KeyStore Explorer.
 *
 * KeyStore Explorer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * KeyStore Explorer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with KeyStore Explorer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.kse.gui.dialogs;

import java.awt.BorderLayout;
import java.awt.Dialog;
import java.awt.FlowLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import java.util.Optional;
import java.util.ResourceBundle;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.EtchedBorder;

import org.kse.crypto.CryptoException;
import org.kse.gui.CursorUtil;
import org.kse.gui.components.JEscDialog;
import org.kse.gui.PlatformUtil;
import org.kse.gui.error.DError;

/**
 * Dialog that displays the details of a key pair.
 */
public class DViewKeyPair extends JEscDialog {
    private static final long serialVersionUID = 1L;

    private static ResourceBundle res = ResourceBundle.getBundle("org/kse/gui/dialogs/resources");

    private JPanel jpKeyPairDetails;
    private JButton jbCertificateDetails;
    private JButton jbPrivateKeyDetails;
    private JPanel jpOK;
    private JButton jbOK;

    private PrivateKey privateKey;
    private X509Certificate[] certificateChain;

    /**
     * Creates a new DViewKeyPair dialog where the parent is a frame.
     *
     * @param parent           The parent frame
     * @param title            The dialog title
     * @param modality         Dialog modality
     * @param privateKey       Private key part of keypair
     * @param certificateChain Certificates part of keypair
     */
    public DViewKeyPair(JFrame parent, String title, Dialog.ModalityType modality, PrivateKey privateKey,
                        X509Certificate[] certificateChain) {
        super(parent, title, modality);
        this.privateKey = privateKey;
        this.certificateChain = certificateChain;
        initComponents();
    }

    /**
     * Creates a new DViewKeyPair dialog where the parent is a dialog.
     *
     * @param parent           The parent dialog
     * @param title            The dialog title
     * @param privateKey       Private key part of keypair
     * @param certificateChain
     */
    public DViewKeyPair(JDialog parent, String title, PrivateKey privateKey, X509Certificate[] certificateChain) {
        super(parent, title, ModalityType.DOCUMENT_MODAL);
        this.privateKey = privateKey;
        this.certificateChain = certificateChain;
        initComponents();
    }

    private void initComponents() {
        jbPrivateKeyDetails = new JButton(res.getString("DViewKeyPair.jbPrivateKeyDetails.text"));
        PlatformUtil.setMnemonic(jbPrivateKeyDetails,
                                 res.getString("DViewKeyPair.jbPrivateKeyDetails.mnemonic").charAt(0));
        jbPrivateKeyDetails.setToolTipText(res.getString("DViewKeyPair.jbPrivateKeyDetails.tooltip"));
        jbPrivateKeyDetails.setEnabled(true);
        jbPrivateKeyDetails.addActionListener(evt -> {
            try {
                CursorUtil.setCursorBusy(DViewKeyPair.this);
                privateKeyDetailsPressed();
            } finally {
                CursorUtil.setCursorFree(DViewKeyPair.this);
            }
        });

        jbCertificateDetails = new JButton(res.getString("DViewKeyPair.jbCertificateDetails.text"));
        PlatformUtil.setMnemonic(jbCertificateDetails,
                                 res.getString("DViewKeyPair.jbCertificateDetails.mnemonic").charAt(0));
        jbCertificateDetails.setToolTipText(res.getString("DViewKeyPair.jbCertificateDetails.tooltip"));
        jbCertificateDetails.setEnabled(true);
        jbCertificateDetails.addActionListener(evt -> {
            try {
                CursorUtil.setCursorBusy(DViewKeyPair.this);
                certificateDetailsPressed();
            } finally {
                CursorUtil.setCursorFree(DViewKeyPair.this);
            }
        });

        jpKeyPairDetails = new JPanel(new FlowLayout(FlowLayout.LEFT));
        jpKeyPairDetails.setBorder(
                new CompoundBorder(new CompoundBorder(new EmptyBorder(5, 5, 5, 5), new EtchedBorder()),
                                   new EmptyBorder(5, 5, 5, 5)));
        jpKeyPairDetails.add(jbPrivateKeyDetails);
        jpKeyPairDetails.add(jbCertificateDetails);

        jbOK = new JButton(res.getString("DViewCertificate.jbOK.text"));
        jbOK.addActionListener(evt -> okPressed());

        jpOK = PlatformUtil.createDialogButtonPanel(jbOK);

        getContentPane().setLayout(new BorderLayout());
        getContentPane().add(jpKeyPairDetails, BorderLayout.CENTER);
        getContentPane().add(jpOK, BorderLayout.SOUTH);

        setResizable(false);

        addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent evt) {
                closeDialog();
            }
        });

        getRootPane().setDefaultButton(jbOK);

        pack();

        SwingUtilities.invokeLater(() -> jbOK.requestFocus());
    }

    private void privateKeyDetailsPressed() {
        try {
            DViewPrivateKey dViewPrivateKey = new DViewPrivateKey(this, res.getString(
                    "DViewKeyPair.ViewPrivateKeyDetails.Title"), privateKey, Optional.empty());
            dViewPrivateKey.setLocationRelativeTo(this);
            dViewPrivateKey.setVisible(true);
        } catch (CryptoException ex) {
            DError.displayError(this, ex);
        }
    }

    private void certificateDetailsPressed() {
        try {
            DViewCertificate dViewCertificate = new DViewCertificate(this, res.getString(
                    "DViewKeyPair.ViewCertificateDetails.Title"), certificateChain, null, DViewCertificate.NONE);
            dViewCertificate.setLocationRelativeTo(this);
            dViewCertificate.setVisible(true);
        } catch (CryptoException ex) {
            DError.displayError(this, ex);
        }
    }

    private void okPressed() {
        closeDialog();
    }

    private void closeDialog() {
        setVisible(false);
        dispose();
    }
}
